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MBAM 404101 Error

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I recently purchased a Malwarebytes license, but I can't even login into the software, and I also can't activate it using the key I received.

I suspect that my computer is infected with some virus that may be preventing me from doing this process, because even my Windows Defender protection is disabled and I can't activate it. 

Erro MBAM 404101

What should I do?



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8 minutes ago, ren0ld1 said:

because even my Windows Defender protection is disabled and I can't activate it. 

Please do the following so that we may take a closer look at your installation for troubleshooting:

NOTE: The tools and the information obtained is safe and not harmful to your privacy or your computer, please allow the programs to run if blocked by your system.


  • Download the Malwarebytes Support Tool
  • In your Downloads folder, open the mb-support-x.x.x.xxx.exe file
  • In the User Account Control pop-up window, click Yes to continue the installation
  • Run the MBST Support Tool
  • In the left navigation pane of the Malwarebytes Support Tool, click Advanced
  • In the Advanced Options, click Gather Logs. A status diagram displays the tool is Getting logs from your machine
  • A zip file named mbst-grab-results.zip will be saved to your desktop, please upload that file on your next reply


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2 minutes ago, ren0ld1 said:

Thank you very much! The software has started and I was able to activate it normally. The problem has been solved!

Now as for Defender. Malwarebytes disables it. turn off the following setting in Malwarebytes.


Edited by Porthos
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